Caffeine (1,3,7-trimethylxanthine, also abbreviated to CAF) is a natural chemical with stimulant effects and is commonly included in many drinks and foods, including coffee, tea, cola, energy drinks, cocoa, chocolates, and so on. Our group previously reported that oral administration of CAF efficiently suppressed the development of intestinal inflammation in a dextran sulfate sodium (DSS)-induced murine acute colitis model by suppressing the expression of chitinase 3-like 1, one of the mammalian chitinases without enzymatic activity. Chitinases are hydrolytic enzymes that break down chitin, a polymer of N-acetylglucosamine, and chitinase-like proteins have no enzymatic activity with preserving chitin-binding ability. CAF binds a cleft of the chitinase active site and plays a role as a pan-chitinase inhibitor. Although CAF showed an anti-inflammatory effect in the above model, oral administration of low-dose CAF with 10% sucrose showed potentially neoplastic effects in colonic epithelial cells in a DSS-induced murine chronic colitis model. In this review, we would like to discuss the pros and cons of coffee/CAF in colonic inflammation and neoplasia with an example of pathological finding.

Inflammatory bowel disease (IBD), primarily Crohn’s disease and ulcerative colitis, had been widely recognized to affect the Western population. However, the notable rise in prevalence of IBD in Asia, including Singapore, had garnered much attention to the causal role of the shift in trend, and more importantly, effective and safe management of the conditions of these groups of patients in terms of therapy, healthcare economics as well as patient well-being. This review presents a summary of the current landscape of IBD in Singapore, and discuss on areas that can be explored to improve and better understand the local condition, as prevalence continues to grow.

Purpose: To focus on the effects of the presence of mesiodens on adjacent teeth and to investigate the timing of its safe removal. Materials and Methods: Cone-beam computed tomography examinations, obtained at Okayama University Hospital over a three-year period, were inspected. Data were recorded including the number of mesiodens; associated abnormalities; and the relationship with neighboring structures. Depending on multiple factors, the risk of developing complications due to early extraction of a mesiodens was divided into three categories: high, medium, and low risk. Results: A total of 5,958 cone-beam computed tomography exams were obtained, 460 patients aged 3-85 years were diagnosed with a total of 568 mesiodens, 382 (67.3%) of which were discovered in young patients (age <10 years), and 333 (87.2%) of these were associated with abnormalities. Regarding the risk categories, 11 (1.9%) were considered to be in the high-risk, five (0.9%) in the medium-risk and 552 (97.2%) in the low-risk categories. Moreover, eight out of 11 high-risk mesiodens were extracted and no post-operative complications have been seen. Conclusion As the results showed that no postoperative complications were seen in all the extracted cases of high-risk mesiodens, this indicates the possibility of safe extraction at an early age which could reduce related future complications.

Semen analysis has long been used to evaluate male fertility. Recently, several sperm function tests have been developed. Of those, the sperm DNA fragmentation index (DFI), which describes the status of the sperm DNA, is thought to be a suitable parameter for evaluating male fertility. However, there have been no large-scale studies on the sperm DFI of Japanese men. Therefore, we investigated the feasibility of using an in-house flow cytometry-based sperm DFI analysis based on the sperm DNA fragmentation test of sperm chromatin structure assay (SCSA) to assess male fertility in Japan. This study enrolled 743 infertile and 20 fertile Japanese men. To evaluate reproducibility, inter- and intraobserver precision was analyzed. A receiver operating characteristic curve analysis was used to set a cutoff value for the sperm DFI to identify men who could father children by timed intercourse or intrauterine insemination. The variability of the sperm DFI among fertile volunteers was determined. The relationship between semen parameters and the sperm DFI was assessed by Spearman's rho test. A precision analysis revealed good reproducibility of the sperm DFI. The cutoff value of sperm DNA fragmentation in infertile men was 24.0%. Semen volume had no relationship with the sperm DFI. Sperm concentration, sperm motility, total motile sperm count, and percentage of normal-shaped sperm were significantly and negatively correlated with the sperm DFI. The median sperm DFI was smaller in fertile volunteers (7.7%) than that in infertile men (19.4%). Sperm DNA fragmentation analysis can be used to assess sperm functions that cannot be evaluated by ordinary semen analysis.
Child ; Chromatin ; DNA Fragmentation ; Flow Cytometry ; Humans ; Infertility, Male/genetics* ; Japan ; Male ; Reproducibility of Results ; Sperm Motility ; Spermatozoa

The specific pathogenesis underlining inflammatory bowel disease (IBD) is very complicated, and it is further more difficult to clearly explain the pathophysiology of 2 major forms of IBD, Crohn’s disease (CD) and ulcerative colitis (UC), and both disorders affect individuals throughout life. Despite every extensive effort, the interplay among genetic factors, immunological factors, environmental factors and intestinal microbes is still completely unrevealed. Animal models are indispensable to find out mechanistic details that will facilitate better preclinical setting to target specific components involved in the pathogenesis of IBD. Based on many recent reports, dysbiosis of the commensal microbiota is implicated in the pathogenesis of several diseases, not only IBD but also colon cancer, obesity, psoriasis as well as allergic disorders, in both human and animal models. Advanced technologies including cell-specific and inducible knockout systems, which are recently employed to mouse IBD models, have further enhanced the ability of developing new therapeutic strategies for IBD. Furthermore, data from these mouse models highlight the critical involvement of dysregulated immune responses and impaired colonic epithelial defense system in the pathogenesis of IBD. In this review, we will explain from the history of animal models of IBD to the recent reports of the latest compounds, therapeutic strategies, and approaches tested on IBD animal models.

BACKGROUND: Management of postprandial hyperglycemia is a key aspect in diabetes treatment. We developed a novel system to measure glucose area under the curve (AUC) using minimally invasive interstitial fluid extraction technology (MIET) for simple monitoring of postprandial glucose excursions. In this study, we evaluated the relationship between our system and continuous glucose monitoring (CGM) by comparing glucose AUC obtained using MIET with that obtained using CGM for a long duration. METHODS: Twenty diabetic inpatients wearing a CGM system were enrolled. For MIET measurement, a plastic microneedle array was applied to the skin as pretreatment, and hydrogels were placed on the pretreated area to collect interstitial fluid. Hydrogels were replaced every 2 or 4 hours and AUC was predicted on the basis of glucose and sodium ion levels. RESULTS: AUC predicted by MIET correlated well with that measured by CGM (r=0.93). Good performances of both consecutive 2- and 4-hour measurements were observed (measurement error: 11.7%±10.2% for 2 hours and 11.1%±7.9% for 4 hours), indicating the possibility of repetitive measurements up to 8 hours. The influence of neither glucose fluctuation nor average glucose level over the measurement accuracy was observed through 8 hours. CONCLUSION: Our system showed good relationship with AUC values from CGM up to 8 hours, indicating that single pretreatment can cover a large portion of glucose excursion in a day. These results indicated possibility of our system to contribute to convenient monitoring of glucose excursions for a long duration.
Area Under Curve* ; Extracellular Fluid ; Glucose* ; Humans ; Hydrogel ; Hydrogels ; Hyperglycemia ; Inpatients ; Plastics ; Skin ; Sodium

　　Since February, 2012, Anjo Kosei Hospital has embarked upon a new scheme for efficiently handling narcotics during surgical operations. For the purpose pharmacists are allowed to enter the operating room for a while. At the same time, the implementation of digital record keeping for narcotics management tasks has started, making it possible to simplify the handling of a great number of patients. By reviewing the effects on narcotics handling and hours billed, we could determine the effectiveness of operating room pharmacist-led narcotics management at Anjo Kosei. Out of narcotics prescriptions (n＝647) handled in the operating room for one month, 84.7% (548/647) was accounted for by prepared narcotics and 99.8% (646/647) by post-operation management. The introduction of the digital record system resulted in a reduction from 53.3±9.6 minutes to 39.6±6.3 minutes for narcotics preparation, and a reduction from 66.8±16.1 minutes to 41.1±13.5 minutes for post-operation management (p<0.01). It has added to the work efficiency and simplification of operations. Moreover, due to the intervention of pharmacists in the operating room, 92.3% of narcotics prescriptions was performed using the new management system within a relatively short time (80.8±18.4minutes). These data show that the introduction of the new scheme has resulted in more efficient management of narcotics at Anjo Kosei.

Objectives: To reveal a relationship between bathing and sleep quality making for healthy aging. Materials and Methods: A population based self-administered mail survey was conducted for randomly selected or all independent people without long-term care needs aged 65 and over in 31 municipalities of Japan in 2010. This data is a part of the Japan Gerontological Evaluation Study (JAGES) project. Frequency of bathing using bathtub in summer and winter was asked. Logistic regression analyses were applied to estimate univariate and multivariate odds ratios of bad sleep quality by regular bathing (7 times or more per week for average of summer and winter) adjusting sex, age, equivalized household income, self-rated health, depression, working status, and region. Results: Response rate of the mail survey was 66.3%. The number of people who made a valid answer for bathing was 18,090. Among them, 53.0% did bathing 7 times a week, 44.6% did less than 7 times, and 2.4% did more than 7 times. Odds ratios by regular bathing were shown on the tables. Most of them indicated significantly low risk for sleeping problems. Conclusion: Regular bathing would be helpful to better sleep quality. After the survey, we are now following up the participants for incidence of long-term care needs and death.

The higher average age of employees by the advancement of compulsory retirement age, and their sedentary life style in automated environments, has become an important issue in enterprise, because of the increase of adult disease and decreased physical fitness level.
The aim of this study was to evaluate the effects of a ten-year corporate health and fitness program to design for the purpose of assisting employees to stay well, through the results of health care examinations. The health and fitness program consist of health care examinations (medical checkup, physical fitness test and seminar for health promotion) and going through a physical training program on an individual basis.
With the increase of their average age, body weight and skin folds increased, but the prevalence of obesity (skin folds ; triceps+subscapula≥35 mm) showed no significant change. However, their blood pressure increased. In blood test, fasting plasma glucose and HDL-cholesterol levels were elevated significantly, but total cholesterol and triglyceride levels showed significantly decrease through this period. Physical fitness evaluation was markedly improved. Furthermore, the absence rate due to sickness was low for this period despite the increase of their average age.
The results suggest that long-term corporate health and fitness program is effective to improve employees' physical fitness level and possibly to prevent the progression of adult disease.